/* ===========================
   Base & Reset
=========================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --primary:    #00CED1;
  --primary-dk: #00BFBF;
  --danger:     #FF5252;
  --success:    #1ABC9C;
  --gray-50:    #f9fafb;
  --gray-100:   #f3f4f6;
  --gray-200:   #e5e7eb;
  --gray-400:   #9ca3af;
  --gray-600:   #4b5563;
  --gray-700:   #374151;
  --gray-800:   #1f2937;
  --radius:     8px;
  --shadow:     0 1px 4px rgba(0,0,0,.10);
  --shadow-md:  0 4px 12px rgba(0,0,0,.12);
}

body {
  font-family: "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;
  font-size: 14px;
  color: var(--gray-800);
  background: var(--gray-100);
  line-height: 1.6;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ===========================
   Layout
=========================== */
.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 24px 16px;
}

/* ===========================
   Header / Nav
=========================== */
.site-header {
  background: var(--primary);
  color: #fff;
  padding: 0 24px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: var(--shadow-md);
}
.site-header .brand { font-size: 18px; font-weight: 700; color: #fff; }
.site-header .brand:hover { text-decoration: none; opacity: .85; }
.site-header nav { display: flex; align-items: center; gap: 16px; }
.site-header nav a { color: rgba(255,255,255,.9); font-size: 13px; }
.site-header nav a:hover { color: #fff; text-decoration: none; opacity: .85; }
.btn-header {
  background: rgba(255,255,255,.2);
  color: #fff;
  border: 1px solid rgba(255,255,255,.4);
  border-radius: 6px;
  padding: 4px 12px;
  font-size: 13px;
  cursor: pointer;
}

/* ===========================
   Breadcrumb
=========================== */
.page-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--gray-600);
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.page-nav a { color: var(--primary); }
.page-nav .sep { color: var(--gray-400); }

/* ===========================
   Cards
=========================== */
.card {
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--gray-200);
  margin-bottom: 20px;
}
.card-link {
  display: block;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
  transition: box-shadow .15s, transform .1s;
}
.card-link:hover {
  box-shadow: 0 4px 16px rgba(0,0,0,.12);
  transform: translateY(-1px);
}
.card-header {
  padding: 14px 20px;
  border-bottom: 1px solid var(--gray-200);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.card-header h2 { font-size: 16px; font-weight: 600; margin: 0; }
.card-body { padding: 5px 14px 14px 14px; }

.card-collapsible .card-header { cursor: pointer; user-select: none; }
.card-collapsible .toggle-icon {
  font-size: 18px;
  color: var(--gray-400);
  transition: transform .2s;
}
.card-collapsible .card-body {
  overflow: hidden;
  max-height: 0;
  padding-top: 0;
  padding-bottom: 0;
  opacity: 0;
  transition: max-height .3s ease, padding .3s ease, opacity .2s ease;
}
.card-collapsible.open .card-body {
  max-height: 1200px;
  padding-top: 5px;
  padding-bottom: 14px;
  opacity: 1;
}
.card-collapsible.open .toggle-icon { transform: rotate(180deg); }

.card-nested {
  box-shadow: none;
  border: 1px solid var(--gray-200);
  margin-top: 12px;
  margin-bottom: 0;
}
.card-header-muted { background: var(--gray-50); }

/* ===========================
   Page heading
=========================== */
.page-title  { font-size: 22px; font-weight: 700; margin-bottom: 4px; }
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

/* ===========================
   Layout helpers
=========================== */
.row         { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.row-between { display: flex; align-items: center; justify-content: space-between; gap: 8px; flex-wrap: wrap; }
.row-start   { display: flex; align-items: flex-start; gap: 12px; flex-wrap: wrap; }
.action-bar  { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 20px; }
.badge-row   { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 6px; }
.ml-auto     { margin-left: auto; }

/* ===========================
   Text helpers
=========================== */
.text-sm       { font-size: 13px; }
.text-xs       { font-size: 12px; }
.text-muted    { color: var(--gray-600); }
.text-empty    { color: var(--gray-400); }
.text-danger   { color: var(--danger); }
.text-center   { text-align: center; }
.font-semibold { font-weight: 600; }
.text-title-md { font-size: 16px; font-weight: 600; }
.nowrap        { white-space: nowrap; }
.amount-pos    { color: var(--success); }
.amount-neg    { color: var(--danger); }

/* ===========================
   Spacing helpers
=========================== */
.mb-0 { margin-bottom: 0; }
.mb-2 { margin-bottom: 8px; }
.mb-4 { margin-bottom: 16px; }
.mb-5 { margin-bottom: 20px; }
.mt-0 { margin-top: 0; }
.mt-3 { margin-top: 12px; }
.pt-0 { padding-top: 0; }

/* ===========================
   Badges
=========================== */
.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 99px;
  font-size: 11px;
  font-weight: 600;
  line-height: 1.6;
}
.badge-success { background: #c6f6d5; color: #276749; }
.badge-warning { background: #fefcbf; color: #7b6002; }
.badge-danger  { background: #fed7d7; color: #9b2c2c; }
.badge-gray    { background: var(--gray-200); color: var(--gray-600); }
.badge-primary { background: #ebf4ff; color: #2b5cbf; }
.badge-lg      { font-size: 14px; padding: 4px 12px; }

/* ===========================
   Tables
=========================== */
.table-wrap { overflow-x: auto; }
table.data-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.data-table th {
  background: var(--gray-50);
  border-bottom: 2px solid var(--gray-200);
  padding: 10px 12px;
  text-align: left;
  font-weight: 600;
  white-space: nowrap;
}
.data-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--gray-200);
  vertical-align: middle;
}
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: var(--gray-50); }
.data-table .num    { text-align: right; font-variant-numeric: tabular-nums; }
.data-table th.num  { text-align: right; }
/* Column widths */
.data-table .col-datetime    { width: 20%; }
.data-table .col-description { width: 20%; }
.data-table .col-amount      { width: 20%; }
.data-table .col-target      { width: 20%; }
.data-table .col-status      { width: 20%; }
.data-table .col-actions     { width: 0%; }

/* ===========================
   Buttons
=========================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 6px 14px;
  border-radius: 6px;
  border: none;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: opacity .15s;
  text-decoration: none;
  line-height: 1.5;
}
.btn:hover   { text-decoration: none; opacity: .88; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-danger  { background: var(--danger);  color: #fff; }
.btn-success { background: var(--success); color: #fff; }
.btn-ghost   { background: transparent; color: var(--primary); border: 1px solid var(--primary); }
.btn-gray    { background: var(--gray-200); color: var(--gray-700); }
.btn-sm      { padding: 3px 10px; font-size: 12px; }
.btn-xs      { padding: 2px 8px;  font-size: 11px; }
.btn-full         { width: 100%; justify-content: center; }
.btn-block-square {
  width: 100%;
  justify-content: center;
  padding: 14px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius);
  letter-spacing: .03em;
}

/* ===========================
   Forms
=========================== */
.form-body p { margin-bottom: 14px; }
.form-body p label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--gray-600);
  margin-bottom: 4px;
}
.form-body p input[type="text"],
.form-body p input[type="number"],
.form-body p input[type="password"],
.form-body p input[type="email"],
.form-body p select,
.form-body p textarea {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--gray-200);
  border-radius: 6px;
  font-size: 13px;
  background: #fff;
  transition: border-color .15s;
}
.form-body p input:focus,
.form-body p select:focus,
.form-body p textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79,110,247,.15);
}
.form-body ul.errorlist { color: var(--danger); font-size: 12px; margin: 4px 0 0; list-style: none; }
.form-body p input[type="radio"],
.form-body p input[type="checkbox"] { width: auto; margin-right: 4px; }
.form-body ul { list-style: none; padding: 0; }
.form-body ul li { display: inline-flex; align-items: center; gap: 4px; margin-right: 12px; font-size: 13px; }
.form-footer  { margin-top: 16px; display: flex; gap: 8px; }
.form-footer-right { justify-content: flex-end; }
.form-inline  { display: inline; }

.inline-form { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-top: 8px; }
.inline-form select,
.inline-form input {
  padding: 6px 10px;
  border: 1px solid var(--gray-200);
  border-radius: 6px;
  font-size: 13px;
  background: #fff;
  flex: 1;
  min-width: 140px;
}

/* ===========================
   Messages
=========================== */
.messages { list-style: none; margin-bottom: 16px; }
.messages li { padding: 10px 16px; border-radius: 6px; font-size: 13px; margin-bottom: 6px; }
.messages .success { background: #c6f6d5; color: #276749; }
.messages .error   { background: #fed7d7; color: #9b2c2c; }
.messages .info    { background: #bee3f8; color: #2a69ac; }
.messages .warning { background: #fefcbf; color: #7b6002; }

/* ===========================
   Sub-page header (back nav)
=========================== */
.sub-page-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
}
.sub-page-header .back-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: 6px;
  box-shadow: var(--shadow);
  color: var(--gray-700);
  font-size: 13px;
  font-weight: 500;
}
.sub-page-header .back-btn:hover { text-decoration: none; background: var(--gray-50); color: var(--gray-800); }

/* ===========================
   Section title
=========================== */
.section-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--gray-800);
  margin: 20px 0 10px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--gray-200);
}
.section-title:first-child { margin-top: 0; }
.section-label { font-size: 12px; font-weight: 600; color: var(--gray-600); margin-bottom: 8px; }

/* ===========================
   Info / Warn boxes
=========================== */
.info-box {
  background: #ebf4ff;
  border-radius: 6px;
  padding: 10px 14px;
  font-size: 13px;
  color: #2b5cbf;
  margin-bottom: 16px;
}
.warn-box {
  background: #fed7d7;
  border-radius: 6px;
  padding: 10px 14px;
  font-size: 13px;
  color: #9b2c2c;
  margin-bottom: 16px;
}
.url-copy-row {
  display: flex;
  align-items: center;
  gap: 8px;
}
.url-copy-row .url-box,
.url-copy-row .url-box-sm { flex: 1; }
.copy-btn.copied {
  color: var(--success);
  border-color: var(--success);
}

.url-box {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: 6px;
  padding: 10px 14px;
  font-size: 13px;
  word-break: break-all;
}
.url-box-sm {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: 6px;
  padding: 8px 12px;
  font-size: 12px;
  word-break: break-all;
}

/* ===========================
   Modal
=========================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.45);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  z-index: 200;
}
.modal-dialog {
  background: #fff;
  border-radius: 16px 16px 0 0;
  width: 100%;
  max-width: 480px;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
}
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px 12px;
  border-bottom: 1px solid var(--gray-200);
}
.modal-title  { font-size: 15px; font-weight: 700; }
.modal-close  { background: none; border: none; font-size: 18px; cursor: pointer; color: var(--gray-400); }
.modal-body   { padding: 16px 20px; overflow-y: auto; flex: 1; }
.modal-footer { padding: 12px 20px; border-top: 1px solid var(--gray-200); }
.modal-text-input {
  width: 100%;
  box-sizing: border-box;
  padding: 8px 2px;
  border: none;
  border-bottom: 2px solid var(--gray-200);
  font-size: 15px;
  outline: none;
  background: transparent;
}
.modal-text-input:focus { border-bottom-color: var(--primary); }

.modal-check-list { list-style: none; padding: 0; margin: 0; }
.modal-check-list li { border-bottom: 1px solid var(--gray-100); }
.modal-check-list li:last-child { border-bottom: none; }
.check-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 4px;
  cursor: pointer;
  font-size: 14px;
}
.check-item input[type="checkbox"] { width: 18px; height: 18px; accent-color: var(--primary); flex-shrink: 0; }
.check-item input[type="radio"]    { width: 18px; height: 18px; accent-color: var(--primary); flex-shrink: 0; }
.check-item-balance { margin-left: auto; font-size: 12px; color: var(--gray-600); font-variant-numeric: tabular-nums; }

.selected-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 4px; }
.selected-tags.modal-trigger {
  min-height: 40px;
  max-height: 96px;
  overflow-y: auto;
  padding: 8px 12px;
  border: 1.5px dashed var(--gray-200);
  border-radius: 6px;
  cursor: pointer;
  transition: border-color .15s, background .15s;
}
.selected-tags.modal-trigger:hover { border-color: var(--primary); background: #f5f7ff; }
.modal-trigger-hint { font-size: 13px; color: var(--gray-400); }
.selected-tag {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  background: #ebf4ff;
  color: #2b5cbf;
  border-radius: 99px;
  font-size: 12px;
  font-weight: 600;
}
.tag-list { display: flex; flex-wrap: wrap; gap: 6px; }
.tag-list-empty { font-size: 13px; color: var(--gray-400); }
.tag-remove-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: #2b5cbf;
  font-size: 11px;
  padding: 0 0 0 4px;
  line-height: 1;
  opacity: 0.6;
}
.tag-remove-btn:hover { opacity: 1; }

/* ===========================
   Receipt image
=========================== */
.receipt-img { max-width: 200px; border-radius: 4px; }

/* ===========================
   Responsive (mobile: ≤768px)
=========================== */
@media (max-width: 768px) {
  .container   { padding: 12px 10px 88px; }
  .grid-2      { grid-template-columns: 1fr; }

  .site-header { padding: 0 12px; }
  .card-body   { padding: 5px 14px 14px 14px; }
  .card-header { padding: 10px 14px; }
  .page-title  { font-size: 18px; }

  .action-bar  { gap: 6px; }
  .btn         { padding: 6px 12px; }
  .btn-sm      { padding: 3px 8px; }

  /* 戻るボタン: 下部中央に固定 */
  .sub-page-header {
    margin-bottom: 16px;
  }
  .sub-page-header .back-btn {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 100;
    padding: 12px 32px;
    font-size: 14px;
    font-weight: 600;
    box-shadow: 0 4px 16px rgba(0,0,0,.18);
    white-space: nowrap;
  }
  .sub-page-header h1 {
    /* ボタンが下に移動するので左寄せのタイトルだけ残す */
    margin-left: 0;
  }
}